Sevenths to edward mcdonald



(No Model.)

0. W. SLOCUM. METHOD OF MAKING PRINTERS GHASES. A

No. 508,250. Patented Nov. 7, 1893.

1 911 5 l G1 [a 01 s 0rsiZM ZdZoouvm UNITED STATES PATnrrr Fries.

ORSILLUS W. SLOCUM, OF TAUNTON, MASSACHUSETTS, ASSIGNOR OF SIX- SEVENTHSTO EDWARD MCDONALD, A. J. MCDONALD, EDWARD F. GOOD- WIN, JOHN H.GALLIGAN, SUMNER B. SARGENT, AND EDW'ARD L. SARGENT,

OF SAME PLACE.

METHOD OF MAKING PRINTERS CHASES.

SPECIFICATION forming part of Letters Patent No. 508,250, dated November'7, 1893.

Application filed December 19.1892. Serial No. 455,599. (No model.) I

To all whom it may concern: separate metallic strips or bars andsquaring Be it known that I, ORSILLUS W. SLOOUM, the ends thereof,assembling the said strips or 50 of Taunton, county of Bristol, State ofMasbars with the squared end of one beveled at sachusetts, have inventedan Improvement in its upright corners and butted against the Methods ofMaking Printers Chases, of which trued. inner edge of and at rightangles to the the following description, in connection with adjacent barat or near its end, and thereafter theaccompanyingdrawings,isaspecification, welding the butted ends together,substan- 55 like letters on the drawings representing like tially aswill be described. parts. Figure 1, in plan view, partially broken out:0 Printers chases as now manufactured are to save space, shows theseparate pieces of a made of cast or wrought iron. In the former chaseembodying my invention. Fig. 2 is a instance, the casting is finished byspecial vertical section takenon the line oca: Fig. 1; 6o machinery tomake the interior perfectly and Fig. 3 is a detail to be referred to.square and independently trued. In the lat- The end pieces a, a, andside pieces I), b,

ter instance, the chase is made by heating a preferably made of wroughtiron strips or bar and bendingit'to shape, and thereafter bars, arefinished, by planing or milling, bewelding the two ends of the bartogether each fore they are assembled, to present perfectly 65 to each.The frames are then milled out by true inner edges a and b and the topand I machinery to true the inner edges and square bottom faces thereofare made parallel to each the corners. other at right angles to saidinner edges, the Cast iron chases are cheaper to make, and side and endpieces being of equal thickness do not require so much finishing, butthey and squared at the ends. When 'so finished 70 can only be made inthe smaller sizes, as the the inner edge of each piece is perfectlystrains to which the large sizes are subjected straight and true fromend to end. The are too great to be withstood by cast iron. pieces arethen assembled, the end of one In newspaper work, and in much book piecebeing butted against the straight inner work very large chases are used,and to make edge of another piece at right angles thereto, 7 5 themsufficiently .strong they are made of and the pieces are then weldedtogether, prefwrought iron rods or bars, bent to shape as erably by theuse of an electric current.

stated. In order to make the corner perfectlysquare It is impossible tosecure true inner edges and true, the corners between the top and in thevicinity of the chase corners, or to get bottom faces of the end piecesare slightly square corners, without subsequent treatbeveled or nickedoff, and the side and end ment by hand, which is slow and expensive,pieces, as a and b,see Fig. 3, are placed against 3 5 or by milling,which, though more rapid, is a bracket or knee 7c of any suitablematerial, I

nearly as expensive, owing to the numerous having its edges is and kexactly at right adjustments of the cutters, made necessary angles toone another, the pieces a and b, by the nature of the work. then beingbrought into contact as described,

This invention has for its object the proand welded, and the beveledcorners are filled 4o duction of a printers chase which shall poswiththe surplus metal, so that no lumps are sees the strength of a wroughtiron chase, and formed requiring subsequent finishing. which can be madein all sizes as cheaply as The bracket or knee it may be rigidly or ad-0 the inferior cast iron chases, and requiring justably secured to abase forming part of no finishing after the welding operation. a weldingapparatus, the same forming no 45 In accordance therewith my inventionconpart of this invention.

sists in the method of making printers The four pieces may be broughtinto proper chases, which comprises first truingthe inner position andthe adjacent parts welded to- 5 edgeand top and bottom faces of a seriesof gether simultaneously, or the pieces may be welded two at a time.When the welding is completed the chase is finished, the corners beingsquare and true, as shown in Fig. 3, and requiring no subsequent toolingor machinery.

It is much easier and cheaper to finish the pieces as described, andmuch more rapid, for strips or bars of any length can be passed througha. planer or milling machine and finished, and thereafter cut into theproper lengths.

I have shown in Fig. 1 partially by dotted lines, and in section Fig. 2,an adjustable bar 0, by means of which the chase can be di- Vided intotwo parts. As herein shown,each end of the bar 0 is provided with aprojection c and an upturned flange 0 adapted to enter a recess 01 andan L-shaped groove d respectively, in the inner edge and lower part ofthe side pieces, the flange acting as a lock to bind the bar etc theside pieces b,b. The recesses d and grooves d extend to one end of eachside piece, as shown in dotted lines Fig. 1, and the bar 0 is slippedinto place before the side and end pieces are welded together. The sidepieces are slotted longitudinally as d see dotted lines Fig. 1, thelength of the slot being equal to the extreme adjustment of which thecross-bar c is capable, said bar being held in adjusted position bythreaded bolts 6 extended through the slots d their threaded endsentering suitably threaded recesses e in the bar 0.

From an inspection of Fig. 2, it will be seen that the outer end of theslot is enlarged to form shoulders against which the bolt heads bear.

I do not desire to restrict myself to any parr ticular dimensions of thechase, nor to the specific shape of the separate pieces, as the same maybe slightly altered without departing from the scope and spirit of myinvention.

I claim- The herein described method of making printers chases, whichconsists in first truing the inner edge and top and bottom faces of aseries of separate metallic strips or bars and squaring the endsthereof, assembling the said strips or bars with the squared end of onebeveled at its upright corners and butted against the trued inner edgeof and at right angles to the adjacent bar at or near its end, andthereafter welding the butted ends together, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ORSILLUS W. SLOOUM.

W'itnesses:

THOMAS O. FALVEY, THOS. J. COBB.

